The Groundskeeper (2018) online

Tessa, a New York Times Best Selling Author of Horror novels, is having nightmares and writer's block, grappling with a traumatic past. Her fiancé, Paul, a Professor at MIT, who specializes in AI and dream manipulation, will enlist all of his tech research to help her, taking Tessa back to the scene of the trauma in the hope of reprogramming the past with the aid of an AI called Genesis